HTTP::HeaderWrite: Don't override `string getHeaderValue()` with `none()`
HTTP::HeaderWrite: Don't override `string getHeaderValue()` with `none()`

github/codeql,github/codeql-go,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql-go,github/codeql,github/codeql,github/codeql-go,github/codeql-go,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql